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FTP connections

sjameel
Aspirant

FTP connections

I am trying to connect to a FTP site as

 

https://ftp.abc.com from a browser (like Chrome, Brave, Internet Explorer).

All the browsers says "This site can’t be reached".

When I connect directly to my cable modem and go to the FTP site, it works fine.

So the Router is blocking it somehow.

Can someone please help me getting that to work.

I have my Router IP address as 20.20.1.1

My Cable Modem is 192.168.1.1

 

What setting should I do to get this working?

 

I have read/reserched all day and do not know what is happening.

Model: RBR50|Orbi AC3000 Tri-band WiFi Router
Message 1 of 11
FURRYe38
Guru

Re: FTP connections

Are you sure thats a valid URL? Doesn't work for me either. www.abc.com works. 

Also ftp://ftp.abc.com is not valid either. 

 

If your ISP Modem has a built in router already, This would be a double NAT (two router) condition which isn't recommended. https://kb.netgear.com/30186/What-is-Double-NAT
https://kb.netgear.com/30187/How-to-fix-issues-with-Double-NAT
Couple of options,
1. Configure the modem for transparent bridge or modem only mode. Then use the Orbi router in router mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.
2. If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ/ExposedHost or IP Pass-Through for the IP address the Orbi router gets from the modem. Then you can use the Orbi router in Router mode.
3. Or disable all wifi radios on the modem and connect the Orbi router to the modem, configure AP mode on the Orbi router. https://kb.netgear.com/31218/How-do-I-configure-my-Orbi-router-to-act-as-an-access-point and https://www.youtube.com/watch?v=H7LOcJ8GdDo&app=desktop
https://kb.netgear.com/26765/Disabled-Features-on-the-Router-when-set-to-AP-Mode

Message 2 of 11
sjameel
Aspirant

Re: FTP connections

I apologise - I should have mentioned.

The FTP address I put in was a sample one.  Not an accurate one.

it is something like https://ftp.deloitte***.com

Now, I have another computer which is VPNed to different company and I can connect using that.

Without VPN, it does not connect.

 

 

 

Message 3 of 11
sjameel
Aspirant

Re: FTP connections

My Spectrum Cable Modem does not have Wifi.  Just a plain Modem.

I am able to connnect to any other FTP sites, like

https://ftp.highmark.com etc

 

I am unable to connect to

https://ftp.deloittefed.com

 

Is there any place in the router that blocks this connection?  

I do not see it in the Blocked Sites.


@sjameel wrote:

I apologise - I should have mentioned.

The FTP address I put in was a sample one.  Not an accurate one.

it is something like https://ftp.deloitte***.com

Now, I have another computer which is VPNed to different company and I can connect using that.

Without VPN, it does not connect.

 

 

 



@sjameel wrote:

I apologise - I should have mentioned.

The FTP address I put in was a sample one.  Not an accurate one.

it is something like https://ftp.deloitte***.com

Now, I have another computer which is VPNed to different company and I can connect using that.

Without VPN, it does not connect.

 

 

 



I have disabled the Netgear Armour as well, still not able to connect.

 

Message 4 of 11
CrimpOn
Guru

Re: FTP connections

My Orbi allows me to access https://ftp.deloittefed.com.

What I get is the attached login screen.

 

I am confused about this modem.

If the IP address of the modem is 192.168.1.1, that indicates that it is a "modem/router".

With the IP address of the Orbi being 20.20.1.1, the user device is "behind two routers", which is called a "Double NAT Condition"

https://kb.netgear.com/30186/What-is-Double-NAT 

 

Message 5 of 11

Re: FTP connections


@CrimpOn wrote:

I am confused about this modem.

If the IP address of the modem is 192.168.1.1, that indicates that it is a "modem/router".

 


Netgear's modem routers usually do 192.168.0.1 while routers are 192.168.1.1.

 

So, unless someone set it to that IP address, heaven only knows what this modem is.

 

Netgear ships cable modems with 192.168.100.1.

 

 

 

 

Message 6 of 11
sjameel
Aspirant

Re: FTP connections

I made a mistake in IP Addresses here.

The Spectrum Cable Modem is showing my ISP IP Address and not 198.xxxxxxxx

The Orbi Router, I have configured with 20.20.1.1 for LAN to start and not the Factory 198 one.

I am able to connect to all FTP sites and except the https://ftp.deloittefed.com

 

When I disconnect the Orbi and connect directly to the Cable Modem, I am able to connect to https://ftp.deloittefed.com

So, somewhere, Orbi might have marked it as invalid/blocked which I do not see.

I also disabled the Netgear Armour and it did not help.

By the way, I was able to connect to https://ftp.deloittefed.com up until last Friday.  All of a sudden it stopped working for me.

 

I apologize for the wrong reporting of Cable Model IP address.

Message 7 of 11
CrimpOn
Guru

Re: FTP connections

Well, I am now very confused. 

 

Windows nslookup resolves the name to 167.219.6.21, which appears to be Deloitte Services, LP.  (Maybe New York City?)

 

Since I got a connection yesterday, I tried today and got "unable to connect" on several browsers.  Thought "how can this BE?"  Before hitting "Post" on this message, I decided "better triple check that again", and NOW all of my browsers bring up this page:

 

Microsoft Edge produces a web site: https://ftp.deloittefed.com/EFTClient/Account/Login.htm 

Chrome produces: the same

Firefox produces: the same

Opera produces: the same

 

So, I am in the Twilight Zone.  First it works. Then it doesn't. Then it does again.

 

p.s. IP subnet 20.20.1.1 is in the middle of Microsoft's IP space.  You may experience "unable to connect" if any program attempts to reach Microsoft servers. 

Source: whois.arin.net
IP Address: 20.20.1.1
Name: MSFT
Handle: NET-20-0-0-0-1
Registration Date: 10/18/17
Range: 20.0.0.0-20.31.255.255
Org: Microsoft Corporation
Org Handle: MSFT
Address: One Microsoft Way
City: Redmond
State/Province: WA
Postal Code: 98052
Country: United States

 

Message 8 of 11

Re: FTP connections


@sjameel wrote:

I made a mistake in IP Addresses here.

The Spectrum Cable Modem is showing my ISP IP Address and not 198.xxxxxxxx

The Orbi Router, I have configured with 20.20.1.1 for LAN to start and not the Factory 198 one.

That makes two of us who are baffled.

 

I'm with @CrimpOn . I have no idea what you are up to.

 

I start from basics.

 

You should have just one NAT device on your local network. Most people use either a separate modem and a standalone router or a combined modem/router to achieve this.

 

The trouble comes when they try to combine a modem/router with a standalone router. In that scenario, they have two routers vying to be the local NAT

 

If it is a modem/router with a standalone router, then they either disable the router bit of the modem, which takes it out of the NAT picture, or they disable the router of the standalone router and use it as a wireless access point.

 

Using addresses like 20.20.1.1 for LAN smells like trying to get around the "two routers" issue. Netgear's setup regime will go for something similar if it detects that someone is trying to pile router after router on to the network.

 

That may fix the NAT conflicts, but it also leads to other possible problems.

 

I throw that into the mix for entertainment rather than edification. I get lost when people start messing around with addresses like 20.20.1.1. It is rarely necessary. But I don't know what you are trying to achieve.

 


@sjameel wrote:

When I disconnect the Orbi and connect directly to the Cable Modem, I am able to connect to https://ftp.deloittefed.com

To me this smells like router piled on router.

 

What is Double NAT? | Answer | NETGEAR Support


Message 9 of 11
sjameel
Aspirant

Re: FTP connections

Hope this helps.

I work in a company where their IP address are 10.xxxxx

I do not like to keep the 192.xxxx which comes as default on the routher.  atleast, I was told to change it.

So, I changed it, and changed it to 20.xxxx not knowing that Microsoft uses that. 

Now, I can change it any other IP for my LAN, I do not care on that.  I can even leave it back to the factory default.

 

My Cable Modem is a standalone Modem.  It is not a Router or a Wifi Router.

 I have Orbi connect (wired) to my Cable Modem and all my devices connect to the Orbi.

 

We have two people who work at two different companies.

one for Deloitte and one for Enterprise.

So, for Deloitte, I have to connect to ftp.deloittefed.com which is not working.

It works for all other FTP sites, just not this.

When I wire my laptop directly to the cable modem (removing wifi altogether), it connects.

when I wifi it to Orbi, it does not.

 

In the other laptop where it has VPN to Enterprise, when I connect to ftp.deloittefed.com, it works fine.  When I disconnect from VPN, it does not.

Really strange and something in the Orbi Router might be stopping this.

 

Message 10 of 11
CrimpOn
Guru

Re: FTP connections

I am not convinced that using 20.20.1.1 for the Orbi LAN side will cause this particular issue.

(It would make reaching any Microsoft IP in the 20.20.1.x subnet impossible, but Microsoft has so many public facing IP's that for a customer to need one in 20.20.1.x seems unlikely.)

 

The bigger issue (to me) is my own situation.  Unless I am having a "senior moment", just today I have had web browsers able to find https://ftp.deloittefed.com, unable to find it, and then able to find it again.

 

I wonder what happens if you attempt connecting to https://ftp.deloittefed.com/EFTClient/Account/Login.htm 

 

One thought is that this is related to the deloitte.com DNS setup. Are these settings common?

nslookup -type=soa ftp.deloittefed.com

deloittefed.com
     primary name server = ns1.deloitte.com
     responsible mail addr = hostmaster.deloitte.com
     serial = 614590236
     refresh = 10800 (3 hours)
     retry = 600 (10 mins)
     expire = 1728000 (20 days)
     default TTL = 900 (15 mins)

Message 11 of 11
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